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MC33164のメーカーはON Semiconductorです、この部品の機能は「Micropower Undervoltage Sensing Circuits」です。 |
部品番号 | MC33164 |
| |
部品説明 | Micropower Undervoltage Sensing Circuits | ||
メーカ | ON Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとMC33164ダウンロード(pdfファイル)リンクがあります。 Total 12 pages
MC34164, MC33164,
NCV33164
Micropower Undervoltage
Sensing Circuits
The MC34164 series are undervoltage sensing circuits specifically
designed for use as reset controllers in portable microprocessor based
systems where extended battery life is required. These devices of fer
the designer an economical solution for low voltage detection with a
single external resistor . The MC34164 series features a bandgap
reference, a comparator with precise thresholds and built−in hysteresis
to prevent erratic reset operation, an open collector reset output
capable of sinking in excess of 6.0 mA, and guaranteed operation
down to 1.0 V input with extremely low standby current. The MC
devices are packaged in 3 −pin T O−92 (T O−226AA), micro size
TSOP−5, 8−pin SOIC−8 and Micro8™ surface mount packages. The
NCV device is packaged in SOIC−8.
Applications include direct monitoring of the 3.0 V or 5.0 V
MPU/logic power supply used in appliance, automotive, consumer,
and industrial equipment.
Features
• Temperature Compensated Reference
• Monitors 3.0 V (MC34164−3) or 5.0 V (MC34164−5) Power Supplies
• Precise Comparator Thresholds Guaranteed Over Temperature
• Comparator Hysteresis Prevents Erratic Reset
• Reset Output Capable of Sinking in Excess of 6.0 mA
• Internal Clamp Diode for Discharging Delay Capacitor
• Guaranteed Reset Operation With 1.0 V Input
• Extremely Low Standby Current: As Low as 9.0 mA
• Economical TO−92 (TO−226AA), TSOP−5, SOIC−8 and Micro8
Surface Mount Packages
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
Input
Reset
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123 1 2 3
STRAIGHT LEAD
BULK PACK
BENT LEAD
TAPE & REEL
AMMO PACK
TO−92 (TO−226AA)
P SUFFIX
CASE 29
5
1
TSOP−5
SN SUFFIX
CASE 483
8
1
SOIC−8
D SUFFIX
CASE 751
8
1
Micro8
DM SUFFIX
CASE 846A
PIN CONNECTIONS
Reset 1
Input 2
N.C. 3
Ground 4
8 N.C.
7 N.C.
6 N.C.
5 N.C.
(Top View)
TSOP−5
Pin 1. Ground
2. Input
3. Reset
4. NC
5. NC
TO−92
Pin 1. Reset
2. Input
3. Ground
1.2 Vref
GND
Figure 1. Representative Block Diagram
This device contains 28 active transistors.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
=
Sink Only
Positive True Logic
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
April, 2009 − Rev. 18
1
Publication Order Number:
MC34164/D
http://www.Datasheet4U.com
1 Page MC34164, MC33164, NCV33164
MC34164−5, MC33164−5 SERIES, NCV33164−5
ELECTRICAL CHARACTERISTICS (For typical values TA = 25°C, for min/max values TA is the operating ambient temperature
range that applies [Notes 5 & 6], unless otherwise noted.)
COMPARATOR
Characteristic
Symbol
Min
Typ
Max Unit
Threshold Voltage
High State Output (Vin Increasing)
Low State Output (Vin Decreasing)
Hysteresis (ISink = 100 mA)
RESET OUTPUT
V
VIH 4.15 4.33 4.45
VIL 4.15 4.27 4.45
VH 0.02 0.09
−
Output Sink Saturation
(Vin = 4.0 V, ISink = 1.0 mA)
(Vin = 1.0 V, ISink = 0.25 mA)
Output Sink Current (Vin, Reset = 4.0 V)
Output Off−State Leakage
(Vin, Reset = 5.0 V)
(Vin, Reset = 10 V)
Clamp Diode Forward Voltage, Reset to Input Pin (IF = 5.0 mA)
TOTAL DEVICE
VOL
ISink
IR(leak)
VF
−
−
7.0
−
−
0.6
0.14
0.1
20
0.02
0.02
0.9
V
0.4
0.3
50 mA
mA
0.5
2.0
1.2 V
Operating Input Voltage Range
Vin 1.0 to 10
−
−
Quiescent Input Current
Vin = 5.0 V
Vin = 10 V
Iin
− 12 20
− 32 50
4. Maximum package power dissipation limits must be observed.
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
6. Tlow = 0 °C for MC34164
= − 40°C for MC33164, NCV33164
Thigh = +70°C for MC34164
= +125°C for MC33164, NCV33164
7. NCV prefix is for automotive and other applications requiring site and change control.
V
mA
10
8.0
RL = 82 k to Vin
TA = 25°C
6.0
4.0
2.0
0
0
2.0 4.0
6.0 8.0
10
Vin, INPUT VOLTAGE (V)
Figure 2. MC3X164−3 Reset Output
Voltage versus Input Voltage
10
8.0
RL = 82 k to Vin
TA = 25°C
6.0
4.0
2.0
0
0 2.0 4.0 6.0 8.0 10
Vin, INPUT VOLTAGE (V)
Figure 3. MC3X164−5 Reset Output
Voltage versus Input Voltage
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3
3Pages MC34164, MC33164, NCV33164
Power
Supply
RH
Iin Vin
1.2 Vref
MC3X164-5 GND
RL
Reset
Microprocessor
Circuit
4.3 RH
VH ≈ RL + 0.06
DVth(lower) ≈ 10 RH x 10 - 6
where: RH ≤ 1.0 kW
43 kW ≥ RL ≥ 4.3 kW
VH
(mV)
60
103
123
160
155
199
280
262
306
357
421
530
Test Data
DVth
(mV)
RH
(W)
00
1.0 100
1.0 100
1.0 100
2.2 220
2.2 220
2.2 220
4.7 470
4.7 470
4.7 470
4.7 470
4.7 470
RL
(kW)
43
10
6.8
4.3
10
6.8
4.3
10
8.2
6.8
5.6
4.3
Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equation has been simplified and does not account for the change of input current
Iin as Vin crosses the comparator threshold (Figure 8). An increase of the lower threshold DVth(lower) will be observed due to Iin which is typically 10 mA at 4.3 V. The
equations are accurate to ±10% with RH less than 1.0 kW and RL between 4.3 kW and 43 kW.
Figure 15. Low Voltage Microprocessor Reset With Additional Hysteresis
(MC3X164−5 Shown)
Power
Supply
Input
1.2 Vref
GND
1.0 k
Reset
Input
1.2 Vref
GND
Reset
Solar
Cells
Figure 16. Voltage Monitor
Figure 17. Solar Powered Battery Charger
VCC
RL
270 MTP3055EL
4.3V
Input
1.2 Vref
Reset
Overheating of the logic level power MOSFET due to insfuicfient
gate voltage can be prevented withthe above circuit. When the
input signal is below the 4.3 V threshold of the MC3X164-5, its
output grounds the gate of the L2 MOSFET.
GND MC3X164-5
Figure 18. MOSFET Low Voltage Gate Drive Protection Using the MC3X164−5
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6 Page | |||
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PDF ダウンロード | [ MC33164 データシート.PDF ] |
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